Overview: From Grape Solar: “Portable Power without the fumes. The Grape Solar RHYNO 500 Portable Generator Uses a 100-watt monocrystalline folding solar panel to charge a 40 Ah lithium-ion battery. The PowerCase has 1 12 volt DC output, 1 AC outlet and a 500 watt pure sine inverter for power where you need it, when [...]